Electrical precipitator



Sept. 6, 1955 Filed Sept. 23, 1954 H. A. WINTERMUTE ELECTRICAL PRECIPITATOR 2 Sheets-Sheet 1 mx, NVENTOR HARRY A. N WINTERMUTE BY A/wr 4M ATTORNEY P 1955 H. A. WINTERMUTE ELECTRICAL PRECIPITATOR 2 Sheets-Sheet 2 Filed Sept. 25, 1954 INVENTOR HARRY A. WINTERMUTE BY M ATTORNFV United States Patent ELECTRICAL PRECIPITATOK' search Corporatiom-NeW'York, N; Y., a corporation of New York Application SeptemberZ'S, 195 4, Serial'N'o. 457,957

4Claims; (CL 183*7) This invention relates to" electrical precipitation apparatus for the" separation of suspended materials from gases -and more particularlyto' discharge electrode support structures for electricalprecipitators' of the Cottrell type,

providing a strong, lightweight, and"balancedelectrodesupportingframe which very efliciently transmits rapping.

impulses-to the individualhigh. tension electrodes.

his art obj'ect'of'tlie present inv'entionto provide support means forhigh tension discharge electrodes whereby the'electro'des are'carried'by supporting arms cantilevered out in both directions from a common support.v

It'is a; further object :to provide such a supporting frame whereby vibratory motion is applied simultaneously to both ends of the hightension discharge electrodes from a single rapping device;

It is a further object ofthe presenrinv'ention to provide such a supporting'tdevice wherein cooperating top and bottom electrode supporting arms are unconnected at their outer ends permitting independent vibratory movement thereof thus insuring va minimunrof"suppressionrof rapping vibration.

Another object is to provide a high tension electrode support including a common vertical support member carrying horizontal beams connected respectively to the top and bottom of the high tension electrodes and a single electrode rapper positioned to impart vibrations to the common vertical support member whereby simultaneous vibrations are applied to the upper and lower ends of the electrodes.

A further object is to provide such a support means that is relatively simple as to its part, economical to install, and highly eflicient in operation.

These and other objects and advantages are provided by the electrode support means for high tension dischargev electrodes of an electrostatic precipitator which generally comprises a casing having a gas inlet and a gas outlet I at opposite ends thereof and a gas treating chamber therebetween, a horizontal beam insulatedly supported centrally of the casing and in the upper portion thereof, a vertical beam secured to the medial point of said horizontal beam and extending downwardly through the gas treating chamber, a pair of vertically spaced support frame members supported at the medial points thereof by said vertical beam in the upper and lower portions of the gas treating chamber, a plurality of flexible high tension discharge electrodes supported between said spaced frame members and a rapping device positioned to impart vibrations to said vertical beam.

The invention will be more particularly described with reference to the illustrated embodiments of the invention shown in the accompanying drawings in which:

Figure l is a fragmentary section of a horizontal flow electrostatic precipitator employing a discharge electrode support system constructed in accordance with the principles of the invention; and

Figure 2 is a partial section on line 2-2 of Figure 1 with the collecting electrodes removed to show more Patented Sept. 6, 1-955 2 clearlythe structural elements comprising the present invention.

Referring to the drawings, 10 is the shell or casing of direction within the gas treating chamber 16. The high tension discharge electrodes 24 are shown, for illustrative purposes, as flexible ribbon typehaving flared. ends 26 such as claimed in my copending application Serial No. 210,212 filed February 9, 1951, now PatentNo. 2,694,464dated November 16, 1954. However, itv is to be. understood that other types of flexible discharge electrodes such as the hire wire electrodes may be employed. withtvery satisfactory results with the cantilevered frame structure of the present invention.

The discharge. electrodes are supported by a frame of cantilever construction to aid in transmitting.v vibratory impulses of the electrode rapping means. 28 to both the upper and the lower portions of the electrode 24 wherebythe electrodes are maintained in a substantially dust. free condition.

The cantilevered electrode support frame generally comprises a main support beam 30 supported atvitsends by insulators 32 and 34 centrally of the casing 10 and the upper portion thereof. Electrical-power forenergizing the high tension discharge electrodes may be brought into the precipitator casing through the insulator 32 as at 36 as is well known in the art. As will be apparent from the following description of the cantilevered electrode frame assembly the sole contact, of the supporting frame, with the casing of the precipitator is through the insulators 32 and 34 adjacent the ends of the main support beam 30.

A vertical beam, generally designated 38, is secured to the medial point of the horizontal main support beam 30 and extends downwardly therefrom through the gas treating chamber 16. The vertical beam 38 is shown in the drawing as comprising a lower section 38' and an upper section 38" for convenience in the assembly of the high tension discharge electrode frame assembly. However, it is apparent that beam 38 may be constructed as a single structural unit. A pair of vertically spaced support frame members 48 and 42 are supported at their medial points by the vertical beam 38 with the frame member 40 positioned in the upper portion of the gas treating chamber 16 and the frame member 42 positioned in the lower portion thereof.

Opposed upper and lower electrode stringer members 44 and 48 are provided for each parallel row of discharge electrodes 24. The upper electrode stringer members 44 are secured at their medial points to the upper cantilevered beam 40, while the lower electrode stringer members 48 are similarly connected to the lower electrode support beam 42. Thus it will be seen that not only are beams 40 and 42 cantilevered outwardly from the vertical support 38 but that the electrode stringer members 44 and 48 are also cantilevered outwardly from their medial points. Between the opposed electrode stringers 44 and 48 extend the flexible discharge electrodes 24. Between the opposed electrode stringer members 44 and 48 are also provided turn buckle connectors 50 and wires 52 as shown in Figure 1 of the drawings for squaring up the cantilever discharge electrode frame assembly. The employment of the turn buckle connectors and wires for squaring up the frame assembly has been found to be very satisfactory as the wires do not prevent independent vibration of the upper and lower stringer members.

Where desired, and in order to prevent excessive swinging of the cantilevered electrode support frame in the gas stream, guide members 54, which are insulated from the precipitator casing 19 may be positioned adjacent the ends of the electrode stringer members 48 as shown in Figure l of the drawings. Since the guide members 54 are not rigidly connected to the electrode stringers 48 the guide members do not appreciably dampen vibrations imparted to the electrode frame by the vibrator 28.

The electrode rapper 28, may be of any conventional type such as the pneumatic or magnetic types, and is supported above the primary support beam 30 in a position to impart vibrations to said beam directly opposite the vertical support beam 38. In operation of the present invention energization of the rapper 2S imparts vibratory motion through the beam 3i) to the vertical support beam 38, then through the cantilevered upper and lower vertical beam or positioned to rap the vertical beam 38 intermediate its ends.

This application is a continuation-in-part of my application Serial No. 210,212, filed February 9, 1951, now Patent No. 2,694,464 dated November 16, 1954.

I claim:

1. A casing having a gas inlet and a gas outlet at opposite ends thereof and a gas treating chamber therebetween, a horizontal beam insulatedly supported cen- 4- trally of said casing and in the upper portion thereof, a vertical beam secured to the medial point of said horizontal beam and extending downwardly through the gas treating chamber, a pair of vertically spaced support frame members supported at the medial points thereof by said vertical beam in the upper and lower portion of the gas treating chamber, a plurality of flexible high tension discharge electrodes supported between said spaced frame members, and a rapping device positioned to impart vibrations to said vertical beam.

2. A casing having a gas inlet and a gas outlet at opposite ends thereof and a gas treating chamber therebetween, a horizontal beam insulatedly supported centrally of said casing and in the upper portion thereof, a vertical beam secured to the medial point of said horizontal beam and extending downwardly through the gas treating chamber, a pair of vertically spaced support frame members supported at the medial points thereof by said vertical beam in the upper and lower portion of the gas treating chamber, opposed upper and lower stringer members supported at the medial points thereof from said frame members, a plurality of flexible high tension discharge electrodes supported between said opposed upper and lower stringer members, and a rapping device positioned to impart vibrations to said vertical beam.

3. The invention defined in claim 2 including turn buckle connectors and wires secured to the end of the opposed upper and lower stringer members.

4. The invention defined in claim 2 wherein the flexible high tension discharge electrodes are provided with flared out portions adjacent their extremities to limit flexure at the point of contact with said complementary upper and lower stringer members.

References Cited in the file of this patent UNITED STATES PATENTS 1,741,352 Viets et a1. Dec. 31, 1929 

